Question
Regression was used to model the number of visitors to a DVD store, per quarter. Estimated Number of visitors = 122.55 2.29t 45.87 Q1 4.9Q2
Regression was used to model the number of visitors to a DVD store, per quarter.
Estimated Number of visitors = 122.55 2.29t 45.87 Q1 4.9Q2 + 17.2Q4
With t is in quarters and the origin is att = 0 June March 2010
Q1, Q2, Q4 are dummy variables for March, June and December, respectively.
Q3 is the dummy variable for the September quarter and is the benchmark for this model.
Which of the following is the correct interpretation of the coefficient of t?
a, The number of visitors to this DVD store does not change, per quarter.
b, The number of visitors to this DVD store is trending upwards and increase by 124.84 per quarter.
c, The number of visitors to this DVD store is trending upwards and increase by 2.29 per quarter.
d, The number of visitors to this DVD store is trending downwards and decrease by 124.84 per quarter.
e, The number of visitors to this DVD store is trending downwards and decrease by 2.29 per quarter
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Performance Analysis And Synthesis For Discrete-Time Stochastic Systems With Network-Enhanced Complexities
Authors: Derui Ding, Zidong Wang, Guoliang Wei
1st Edition
0429880022, 9780429880025
